北京地区PBA法施工对周边环境影响评估方法  

Impact Assessment Method of Projects Constructed by PBA on Surrounding Environment in Beijing

作　　者：张衍林 王鑫[2] 张飞 刘义勤 吕连勋 Zhang Yanlin;Wang Xin;Zhang Fei;Liu Yiqin;LüLianxun(Mine Big Data Research Institute,China Coal Research Institute,Beijing 100013,China;BGI Engineering Consultants Ltd.,Beijing 100038,China;Beijing MTR Construction Administration Corporation,Beijing 100068,China;Qingdao China Petroleum Geotechnical Engineering Co.Ltd.,Qingdao 266071,China)

机构地区：[1]煤炭科学研究总院矿山大数据研究院,北京100013 [2]北京市勘察设计研究院有限公司,北京100038 [3]北京市轨道交通建设管理有限公司,北京100068 [4]青岛中油岩土工程有限公司,山东青岛266071

出　　处：《市政技术》2021年第10期87-94,共8页Journal of Municipal Technology

基　　金：北京市科技计划应用技术协同创新资助项目(Z201100004520015);中国煤炭科工集团有限公司科技创新创业资金专项资助项目(2019-2-ZD002)。

摘　　要：北京地区采用PBA法施工的工程大多位于城市繁华区,其对周边环境影响显著,该类工程在施工前需开展风险评估工作。采用数值分析评价PBA法施工对周边环境的影响依赖于模型的准确性和参数的可靠性。为了快速调整模型并确定计算参数,提出一种适用于北京地区PBA法施工对周边环境影响的评估方法,即将Peck经验公式法与数值计算法相结合。通过实践检验,证明该方法实用、可靠,对于北京类似工程的环境影响评估具有借鉴意义。Most projects constructed by PBA method in Beijing are located in downtown and significantly impact the surrounding environment.Risk assessment work is required before construction.That using numerical analysis to evaluate the influence of PBA construction on the surrounding environment depends on the accuracy of the model and the reliability of the parameters.In order to quickly adjust the model and get the calculation parameters,a method suitable for assessing the impact of construction by PBA method in Beijing is proposed.It is combination of Peck empirical formula method and numerical method and practical tested to be practical and reliable.It can provide reference for similar projects in Beijing.

关 键 词：PBA法 Peck经验公式 数值计算法 沉降槽宽度系数 地层损失率 周边环境 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]